Mechanical Engineering Interview Questions

first there is no compressor in steam power plant as compressor can be used only to compress gas not liquid. condenser is used in plant to condense the steam so that liquid water can be pumped to bo...

The pressure at the end of turbine exit is low and the temperature is relatively high so the state of water (saturated or in wet region ) the pump compress only in incompressible fluids like water and dont compress vapor or (vapor + liquid water ) so it must be completely water

Turning operation in CNC machine.

First we can do chamfering (converting edges into round shapes) than we can perform conventional operation for good surface finish

The forces acting along the plane of fluid or perpendicular to the longitudinal axis of fluid particle will be called as shear force.

For newtonian fluids Shear force(T) is directly proportional to velocity gradient(du/dx).
T = mu*du/dt . Where mu is the coefficient of viscosity..

Basically, a multi-point fuel injection system or MPI puts a fuel injector in the intake plenum directly over each intake port in the head. The ECU reads RPM, engine load, throttle position, and crank...

we require spark plug in mpfi engine as the technology is just to produce proper air fuel mixture but the operation of si engine remains same also ecu even controls spars advancing

It acts to reinforce the metal. Similar to an i-beam. By adding a bend, it adds another axis to the metal which in turn reinforces the sheet. If you bend it again, it will become even more rigid.

The different types of suspension include: coil spring suspension, leaf spring suspension, coilover suspension, torsion bar suspension, air bag suspension. There may be more, but those are the primary types of suspension used in autos. All will include shock absorbers or struts to absorb rebound.

There are two types of suspension. they are:-
1) Independent
2) Non Independent

The pressure of the exhaust inside the exhaust pipe decreases as it reaches the "silencer". This is because the silencer acts as a larger chamber for the exhaust to expand in. As the exhaust expands,...

It is useful in V engines in order to reduce back pressure. but in others like in Mahindra XUV it is just for nice appearance.

First angle projection mean directly proportional from the model view to convert to drafting,third angle projection mean indirectly proportional from the model view to drafting .

1 st angle at hp and 3rd angle at vp

in mud pot water get cool because upper surface of water has higher kinetic energy which is continuously come out from the pot hence water get cooled.

Because when the mud get wet it will absorb moisture from atmosphere which makes water inside cooler

1.All Springs in series will experience the same force F applied at the end. (F=F1=F2) 2.Total deflection of this system will be equal to deflection of individual spring (L=L1+L2) As F=KL THEREFO...

1/k1+1/k2

steel is more elastic because young Modulus of elasticity of steel is more than that of rubber.

It is the property of material in which metal gains it initial position after removal of force.

In two stroke SI & CI engine , there are two stroke of piston and one revolution of crankshaft to complete one cycle.....IN two stroke engine there are ports... But IN four stroke SI &CI engine , the...

In the two stroke SI Engine there are we get the power one rotation of crank shaft.....in two stroke there is a one suction stroke and second is power stroke. In four stroke SI Engine there are we ...

Generally pressure is defined as the normal force per unit cross-sectional area but stress is defined as the resistive force per unit cross sectional area

Pressure is the applying force, stress is the resistance to that force,,,,,,,,,,,,,pressure term is used for to the fluids whereas stress is used for solid bodies.

Torque is defined as the product of force and radius of shaft it is known as twisting moment.

torque may be defined as a force applied to an object which results in rotational motion.

Multi Point Fuel Injection System

Multi Port Fuel Injection system

Digital twin spark ignition

DTSI stands for Digital Twin Spark Ignition. It is used to get better cumbustion in cumbustion chamber.

usually specified by major diameter eg, M20

according to hole dia and flange thickness we divide the dia and length of bolt. normally 1.25 less in dia and 1.25 add in length

M33*2 refers to major diameter of thread is 33mm and pitch size(distance between two crests) is 2 mm.

33 is dia and 2is length

Crankshaft is a component of engine, which transmits power developed in combustion chamber to flywheel with the help of connecting rod. Reciprocating motion of piston is converted to rotary motion with the help of connecting rod which connects piston and crankshaft.

it's a part of an engine which translates reciprocating linear piston motion into rotation.

Setting down Operation is One of The Forging Operations, Others Being Drawing, upsetting, Fullering,bending punching,etc. when We Hammer down To Get Desired Shape,we can see the Hammer Spots which are...